Template force application structure and hot pressing die

Abstract

The utility model relates to the technical field of paper pulp shaping equipment, and discloses a template force application structure and a hot pressing die, which comprise a force application piece, a pressing template, a first adapter plate, a second adapter plate, a first dowel bar and a second dowel bar, the force application piece is connected with the first adapter plate, the force application direction of the force application piece is perpendicular to the first adapter plate, and the force application center line of the force application piece passes through the center of the first adapter plate; a plurality of first dowel bars are connected between the first adapter plate and the second adapter plate, the first dowel bars are evenly distributed around the force application center line of the force application piece at intervals, a plurality of second dowel bars are connected between the second adapter plate and the pressure applying template, and the second dowel bars are evenly distributed around the force application center line of the force application piece at intervals. The axial directions of the first dowel bars and the second dowel bars are consistent with the force application direction, and the number of the first dowel bars is smaller than that of the second dowel bars. Uniform load distribution is achieved under the condition of a single force application part, the number of the force application parts is reduced, cost is reduced, meanwhile, structural parts prone to abrasion do not exist, and maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of pulp molding equipment technology, and in particular to a template force application structure and a hot press mold. Background Technology

[0002] After the pulp molding process, the molded products need to be hot-pressed in a hot press to obtain the dried product. The hot press provides high temperature and pressure to dry and compact the product. With the market demand for high production capacity, the mold size is getting larger and larger. This also brings a problem: how to ensure that the large mold is stressed evenly and with minimal deformation. If the large mold is not stressed evenly, the flatness deviation of the mold surface will be too large, resulting in inconsistent product quality.

[0003] The existing methods for increasing the uniformity of stress on the template in the force-applying structure mainly include the following: one is... Figure 1 As shown, by increasing the thickness of the template 200, the hydraulic cylinder 100 applies a force to the center of the template 100; secondly, as... Figure 2 As shown, the number of hydraulic cylinders 100 is increased, the main hydraulic cylinder applies force to the center of the template 200, and the auxiliary hydraulic cylinders are evenly distributed around the main hydraulic cylinder; thirdly, as... Figure 3 As shown, a bendable structure 300 is added between the hydraulic cylinder 100 and the template 200 to transmit force.

[0004] However, each of the above methods has its drawbacks. Increasing the thickness of the template requires certain dimensions of the hot press mold. With a limited size, the template thickness can only be increased in a limited way, making it difficult to achieve the desired effect. Although multiple cylinders can distribute the load evenly, the matching control system for the pressure applied by each cylinder is complex and costly. The transmission of the elbow structure is complex, and the elbow joint shaft is prone to wear, requiring regular replacement and resulting in high maintenance costs. Utility Model Content

[0005] The purpose of this utility model is to provide a template force application structure to solve the problems of poor template force application uniformity and high cost in the existing hot press mold; this utility model also provides a hot press mold using the template force application structure.

[0006] To achieve the above objectives, this utility model provides a template force application structure, including a force application component, a pressure application template, a first transition plate, a second transition plate, a first force transmission rod, and a second force transmission rod. The first transition plate, the second transition plate, and the pressure application template are arranged parallel to each other in the vertical direction. The first transition plate is disposed between the force application component and the second transition plate, and the second transition plate is disposed between the first transition plate and the pressure application template.

[0007] The force-applying component is fixedly connected to the first adapter plate, the force-applying direction of the force-applying component is perpendicular to the first adapter plate, and the force-applying center line of the force-applying component passes through the center of the first adapter plate.

[0008] A plurality of first force transmission rods are connected between the first adapter plate and the second adapter plate. Each first force transmission rod is evenly distributed around the force application center line of the force application component. A plurality of second force transmission rods are connected between the second adapter plate and the pressure application template. Each second force transmission rod is evenly distributed around the force application center line of the force application component. The axial direction of both the first and second force transmission rods is consistent with the force application direction of the force application component. The number of first force transmission rods is less than the number of second force transmission rods.

[0009] Preferably, the connection points of each of the first force transmission rods and the first adapter plate are located in a first plane, and the first plane is perpendicular to the force application center line of the force application member.

[0010] Preferably, the connection points of each of the second force transmission rods and the second adapter plate are located in the second plane, which is perpendicular to the force application center line of the force application member.

[0011] Preferably, the number of the second force transmission rods is an exponential multiple of the number of the first force transmission rods.

[0012] Preferably, both the first and second adapter plates are square structures. There are four first force transmission rods located at the four corners of the first adapter plate. There are sixteen second force transmission rods distributed at intervals along the four sides of the second adapter plate.

[0013] Preferably, the force-applying component is a hydraulic cylinder.

[0014] Preferably, it further includes a third adapter plate and a third force transmission rod. The third adapter plate is arranged parallel to each other between the second adapter plate and the pressure application template. The second force transmission rod is connected between the second adapter plate and the third adapter plate. The third force transmission rod is connected between the third adapter plate and the pressure application template. Each of the third force transmission rods is evenly distributed around the force application center line of the force application member. The number of third force transmission rods is greater than the number of second force transmission rods.

[0015] This utility model also provides a hot pressing mold, including the template force application structure described in any of the above technical solutions.

[0016] Compared with the prior art, the template force-applying structure and hot pressing mold of this utility model embodiment have the following advantages: A first transition plate, a second transition plate, a first force transmission rod, and a second force transmission rod are provided between the force-applying component and the pressing template. Because the first and second force transmission rods are evenly distributed around the force-applying center line of the force-applying component, the force exerted by the force-applying component on the first transition plate is evenly distributed to the second transition plate via the first force transmission rod, and then evenly distributed to the pressing template via the second force transmission rod. Simultaneously, since the number of first force transmission rods is less than the number of second force transmission rods, the first transition plate, the second transition plate, and the pressing template form a pagoda-shaped structure. The force at each point on the second transition plate and the pressing template decreases sequentially, achieving a uniform distribution of load on the pressing template, ensuring uniform stress on the pressing template, reducing deformation at various points on the pressing template, and improving product quality. Achieving uniform load distribution with a single force-applying component reduces the number of force-applying components, lowers costs, and eliminates easily worn structural parts, resulting in low maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first type of existing force-applying structure;

[0018] Figure 2 This is a schematic diagram of the second type of existing force-applying structure;

[0019] Figure 3 This is a schematic diagram of the third type of existing force-applying structure;

[0020] Figure 4 This is a schematic diagram of the template force application structure of this utility model;

[0021] Figure 5 yes Figure 4 A schematic diagram of the stress deformation of the first transition plate, the second transition plate, and the pressure-applying template in the template force-applying structure.

[0022] In the diagram, 1 is the force-applying component, 2 is the pressure-applying template, 3 is the first adapter plate, 4 is the second adapter plate, 5 is the first force transmission rod, 6 is the second force transmission rod, 7 is the first plane, 8 is the second plane, 100 is the hydraulic cylinder, 200 is the template, and 300 is the elbow structure. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0024] A preferred embodiment of the template force-applying structure of this utility model is as follows: Figure 4 and Figure 5The template force-applying structure includes a force-applying component 1, a pressure-applying template 2, a first adapter plate 3, a second adapter plate 4, a first force transmission rod 5, and a second force transmission rod 6. The force-applying component 1 is used to apply the extrusion force to the pressure-applying template 2 to compress the molded product. The first adapter plate 3, the second adapter plate 4, the first force transmission rod 5, and the second force transmission rod 6 are used to transmit the force to the pressure-applying template 2.

[0025] The first adapter plate 3, the second adapter plate 4, and the pressure-applying template 2 are arranged parallel to each other in the vertical direction. The first adapter plate 3 is located between the force-applying component 1 and the second adapter plate 4, and the second adapter plate 4 is located between the first adapter plate 3 and the pressure-applying template 2. The force-applying component 1 is fixedly connected to the first adapter plate 3. That is, the first adapter plate 3, the second adapter plate 4, and the pressure-applying template 2 are arranged sequentially along the force-applying direction of the force-applying component 1, where the force-applying direction of the force-applying component 1 refers to the direction of the force exerted by the force-applying component 1 on the first adapter plate 3. In this embodiment, the force-applying direction is the vertical direction.

[0026] The force-applying component 1 applies force in a direction perpendicular to the first adapter plate 3, and the center line of force application of component 1 passes through the center of the first adapter plate 3. This perpendicularity ensures that the first adapter plate 3 is not subjected to horizontal shear force, and that the force transmitted from the first adapter plate 3 to the first transmission rod 5 and the second adapter plate 4 is also vertical. The fact that the center line of force application of component 1 passes through the center of the first adapter plate 3 ensures that the force at each position on the first adapter plate 3 is symmetrically distributed along its center, facilitating the placement of the first transmission rod 5 and the second transmission rod 6.

[0027] Multiple first force transmission rods 5 are connected between the first transition plate 3 and the second transition plate 4, and each first force transmission rod 5 is evenly distributed around the force application center line of the force application component 1. Multiple second force transmission rods 6 are connected between the second transition plate 4 and the pressure application template 2, and each second force transmission rod 6 is evenly distributed around the force application center line of the force application component 1. The even distribution of the first force transmission rods 5 and second force transmission rods 6 around the force application center line of the force application component 1 ensures that the force transmitted by the first force transmission rods 5 and second force transmission rods 6 is the same, and also ensures that the force received at each position of the second transition plate 4 and the pressure application template 2 is the same, and that the force is symmetrically distributed around the force application center line of the force application component 1, thus achieving uniform load distribution.

[0028] The axial direction of the first force transmission rod 5 and the axial direction of the second force transmission rod 6 are both consistent with the direction of force application of the force application component 1. The number of first force transmission rods 5 is less than the number of second force transmission rods 6. The fact that the axial directions of the first force transmission rods 5 and the second force transmission rods 6 are consistent with the direction of force application can avoid the first force transmission rods 5 and the second force transmission rods 6 being subjected to lateral shear force, thus extending their service life.

[0029] Since the number of second force transmission rods 6 is greater than the number of first force transmission rods 5, the force transmitted by each second force transmission rod 6 is less than the force transmitted by each first force transmission rod 5, and the distribution area of ​​the second force transmission rods 6 is also larger. The force transmitted from the second transition plate 4 to the pressure template 2 can be evenly distributed over a larger area, making the load distribution more reasonable.

[0030] The template force-applying structure consists of a first transition plate 3, a second transition plate 4, a first force transmission rod 5, and a second force transmission rod 6 between the force-applying component 1 and the pressure-applying template 2. Since the first force transmission rod 5 and the second force transmission rod 6 are evenly distributed around the force-applying center line of the force-applying component 1, the force exerted by the force-applying component 1 on the first transition plate 3 is evenly distributed to the second transition plate 4 via the first force transmission rod 5, and then evenly distributed to the pressure-applying template 2 via the second force transmission rod 6. Simultaneously, because the number of first force transmission rods 5 is less than the number of second force transmission rods 6, the first transition plate 3, the second transition plate 4, and the pressure-applying template 2 form a pagoda-shaped structure. The force at each point on the second transition plate 4 and the pressure-applying template 2 decreases sequentially, achieving a uniform distribution of load on the pressure-applying template 2. This ensures uniform stress on the pressure-applying template 2, reduces deformation at various points on the pressure-applying template 2, and improves product quality. Achieving uniform load distribution with a single force-applying component 1 reduces the number of force-applying components 1, lowers costs, and eliminates easily worn structural parts, resulting in low maintenance costs.

[0031] Preferably, the connection points of each first force transmission rod 5 and the first adapter plate 3 are all located within the first plane 7, and the first plane 7 is perpendicular to the force application center line of the force application member 1.

[0032] The connection points between the first force transmission rod 5 and the first adapter plate 3 are all located within the first plane 7, which is perpendicular to the force application center line of the force application member 1. This results in a symmetrical structure where each force-bearing point on the first adapter plate 3 is distributed around the center line of the force application member 1, and the deformation of the first adapter plate 3 is also symmetrical, leading to a more reasonable load distribution on the first adapter plate 3. In this embodiment, the first plane 7 is the bottom surface of the first adapter plate 3.

[0033] Preferably, the connection points of each second force transmission rod 6 and the second adapter plate 4 are all located within the second plane 8, and the second plane 8 is perpendicular to the force application center line of the force application member 1.

[0034] The connection points between the second force transmission rod 6 and the second adapter plate 4 are all located within the second plane 8, which is perpendicular to the force application center line of the force application member 1. This results in a symmetrical structure where each force-bearing point on the second adapter plate 4 is distributed around the center line of the force application member 1, and the deformation of the second adapter plate 4 is also symmetrical, leading to a more reasonable load distribution on the second adapter plate 4. In this embodiment, the second plane 8 is the bottom surface of the second adapter plate 4.

[0035] Preferably, the number of second force transmission rods 6 is an exponential multiple of the number of first force transmission rods 5.

[0036] The number of second force transmission rods 6 increases exponentially compared to the number of first force transmission rods 5. This increases the number of second force transmission rods 6, forming a pagoda-shaped force-bearing structure and reducing the force exerted by each second force transmission rod 6.

[0037] Preferably, both the first adapter plate 3 and the second adapter plate 4 are square structures. There are four first force transmission rods 5, which are located at the four corners of the first adapter plate 3. There are sixteen second force transmission rods 6, which are distributed at intervals along the four sides of the second adapter plate 4.

[0038] Both the first adapter plate 3 and the second adapter plate 4 are square in shape. The first force transmission rod 5 and the second force transmission rod 6 are located at the edges of the square structure, which can evenly transmit the force of the first force transmission rod 5 and the second force transmission rod 6 to the second adapter plate 4 and the pressure template 2, resulting in a more uniform and reasonable load distribution. In this embodiment, the side length of the first adapter plate 3 is smaller than the side length of the second adapter plate 4.

[0039] Preferably, the force-applying component 1 is a hydraulic cylinder.

[0040] Hydraulic cylinders are commonly used force-applying components, and their technology is mature and their cost is low.

[0041] Preferably, it also includes a third adapter plate and a third force transmission rod. The third adapter plate is arranged in parallel between the second adapter plate 4 and the pressure template 2. The second force transmission rod 6 is connected between the second adapter plate 4 and the third adapter plate. The third force transmission rod is connected between the third adapter plate and the pressure template 2. Each third force transmission rod is evenly distributed around the force application center line of the force application component 1. The number of third force transmission rods is greater than the number of second force transmission rods 6.

[0042] Adding a third adapter plate and a third force transmission rod, and further increasing the number of third force transmission rods, can make the force applied to each position of the pressure application template 2 more uniform and reasonable, resulting in a more even load distribution. In other embodiments, the number of adapter plates and force transmission rods can be further increased as needed.

[0043] This utility model also provides a preferred embodiment of a hot press mold, including a template force-applying structure. The specific structure of the template force-applying structure is the same as that of the template force-applying structure in any of the above embodiments, and will not be described again here.

[0044] In summary, this utility model embodiment provides a template force-applying structure and a hot press mold. A first transition plate, a second transition plate, a first force transmission rod, and a second force transmission rod are arranged between the force-applying component and the pressing template. Because the first and second force transmission rods are evenly distributed around the force-applying center line of the force-applying component, the force exerted by the force-applying component on the first transition plate is evenly distributed to the second transition plate via the first force transmission rod, and then evenly distributed to the pressing template via the second force transmission rod. Simultaneously, since the number of first force transmission rods is less than the number of second force transmission rods, the first transition plate, the second transition plate, and the pressing template form a pagoda-shaped structure. The force at each point on the second transition plate and the pressing template decreases sequentially, achieving a uniform distribution of load on the pressing template, ensuring uniform stress on the pressing template, reducing deformation at various points on the pressing template, and improving product quality. Achieving uniform load distribution with a single force-applying component reduces the number of force-applying components, lowers costs, and eliminates easily worn structural parts, resulting in low maintenance costs.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A template force application structure, characterized by, The template force applying structure comprises a force applying element (1), a pressure applying template (2), a first adapter plate (3), a second adapter plate (4), a first force transmission rod (5) and a second force transmission rod (6), the first adapter plate (3), the second adapter plate (4) and the pressure applying template (2) are arranged in parallel and spaced apart in the vertical direction, the first adapter plate (3) is arranged between the force applying element (1) and the second adapter plate (4), and the second adapter plate (4) is arranged between the first adapter plate (3) and the pressure applying template (2); The force applying element (1) is fixedly connected with the first adapter plate (3), the force applying direction of the force applying element (1) is perpendicular to the first adapter plate (3), and the force applying center line of the force applying element (1) passes through the center of the first adapter plate (3); A plurality of first force transmission rods (5) are connected between the first adapter plate (3) and the second adapter plate (4), each first force transmission rod (5) is uniformly distributed around the force applying center line of the force applying element (1), a plurality of second force transmission rods (6) are connected between the second adapter plate (4) and the pressure applying template (2), each second force transmission rod (6) is uniformly distributed around the force applying center line of the force applying element (1), the axial direction of the first force transmission rod (5) and the axial direction of the second force transmission rod (6) are consistent with the force applying direction of the force applying element (1), and the number of the first force transmission rod (5) is less than the number of the second force transmission rod (6).

2. The template force application structure of claim 1, wherein, The connecting points of each first force transmission rod (5) and the first adapter plate (3) are located in a first plane (7), and the first plane (7) is perpendicular to the force applying center line of the force applying element (1).

3. The template force application structure of claim 1, wherein, The connecting points of each second force transmission rod (6) and the second adapter plate (4) are located in a second plane (8), and the second plane (8) is perpendicular to the force applying center line of the force applying element (1).

4. The template force application structure of any one of claims 1-3, wherein, The number of the second force transmission rod (6) is an exponential multiple of the number of the first force transmission rod (5).

5. The template force application structure of claim 4, wherein, The first adapter plate (3) and the second adapter plate (4) are both square structures, there are four first force transmission rods (5), and the four first force transmission rods (5) are located at the four corners of the first adapter plate (3); there are sixteen second force transmission rods (6), and the sixteen second force transmission rods (6) are distributed in parallel along the four edges of the second adapter plate (4).

6. The template force application structure of any one of claims 1-3, wherein, The force applying element (1) is an oil cylinder.

7. The template force application structure of any one of claims 1-3, wherein, A third adapter plate and a third force transmission rod are further included, the third adapter plate is arranged in parallel and spaced apart between the second adapter plate (4) and the pressure applying template (2), the second force transmission rod (6) is connected between the second adapter plate (4) and the third adapter plate, the third force transmission rod is connected between the third adapter plate and the pressure applying template (2), each third force transmission rod is uniformly distributed around the force applying center line of the force applying element (1), and the number of the third force transmission rod is greater than the number of the second force transmission rod (6).

8. A hot press mold characterized by comprising: The template force applying structure comprises the template force applying structure according to any one of claims 1-7.

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